8. In a certain bank account, when the balance is $A, interest accrues continually at a rate of A dollars per month. The owner of the account keeps themselves to a budget, withdrawing money continually at a rate of . VA dollars per month. There is no other activity in the account. (a) (2 points) Set up a differential equation for dA summarizing the given information. (b) (3 points) If A(0) = 2500, give an explicit formula for A(t)